diff options
Diffstat (limited to 'sound/ppc/pmac.c')
| -rw-r--r-- | sound/ppc/pmac.c | 1328 |
1 files changed, 1328 insertions, 0 deletions
diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c new file mode 100644 index 0000000..6c4ed90 --- /dev/null +++ b/sound/ppc/pmac.c @@ -0,0 +1,1328 @@ +/* + * PMac DBDMA lowlevel functions + * + * Copyright (c) by Takashi Iwai <tiwai@suse.de> + * code based on dmasound.c. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include <sound/driver.h> +#include <asm/io.h> +#include <asm/irq.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <sound/core.h> +#include "pmac.h" +#include <sound/pcm_params.h> +#ifdef CONFIG_PPC_HAS_FEATURE_CALLS +#include <asm/pmac_feature.h> +#else +#include <asm/feature.h> +#endif + + +#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK) +static int snd_pmac_register_sleep_notifier(pmac_t *chip); +static int snd_pmac_unregister_sleep_notifier(pmac_t *chip); +static int snd_pmac_suspend(snd_card_t *card, pm_message_t state); +static int snd_pmac_resume(snd_card_t *card); +#endif + + +/* fixed frequency table for awacs, screamer, burgundy, DACA (44100 max) */ +static int awacs_freqs[8] = { + 44100, 29400, 22050, 17640, 14700, 11025, 8820, 7350 +}; +/* fixed frequency table for tumbler */ +static int tumbler_freqs[1] = { + 44100 +}; + +/* + * allocate DBDMA command arrays + */ +static int snd_pmac_dbdma_alloc(pmac_dbdma_t *rec, int size) +{ + rec->space = kmalloc(sizeof(struct dbdma_cmd) * (size + 1), GFP_KERNEL); + if (rec->space == NULL) + return -ENOMEM; + rec->size = size; + memset(rec->space, 0, sizeof(struct dbdma_cmd) * (size + 1)); + rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space); + rec->addr = virt_to_bus(rec->cmds); + return 0; +} + +static void snd_pmac_dbdma_free(pmac_dbdma_t *rec) +{ + if (rec) + kfree(rec->space); +} + + +/* + * pcm stuff + */ + +/* + * look up frequency table + */ + +unsigned int snd_pmac_rate_index(pmac_t *chip, pmac_stream_t *rec, unsigned int rate) +{ + int i, ok, found; + + ok = rec->cur_freqs; + if (rate > chip->freq_table[0]) + return 0; + found = 0; + for (i = 0; i < chip->num_freqs; i++, ok >>= 1) { + if (! (ok & 1)) continue; + found = i; + if (rate >= chip->freq_table[i]) + break; + } + return found; +} + +/* + * check whether another stream is active + */ +static inline int another_stream(int stream) +{ + return (stream == SNDRV_PCM_STREAM_PLAYBACK) ? + SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK; +} + +/* + * allocate buffers + */ +static int snd_pmac_pcm_hw_params(snd_pcm_substream_t *subs, + snd_pcm_hw_params_t *hw_params) +{ + return snd_pcm_lib_malloc_pages(subs, params_buffer_bytes(hw_params)); +} + +/* + * release buffers + */ +static int snd_pmac_pcm_hw_free(snd_pcm_substream_t *subs) +{ + snd_pcm_lib_free_pages(subs); + return 0; +} + +/* + * get a stream of the opposite direction + */ +static pmac_stream_t *snd_pmac_get_stream(pmac_t *chip, int stream) +{ + switch (stream) { + case SNDRV_PCM_STREAM_PLAYBACK: + return &chip->playback; + case SNDRV_PCM_STREAM_CAPTURE: + return &chip->capture; + default: + snd_BUG(); + return NULL; + } +} + +/* + * wait while run status is on + */ +inline static void +snd_pmac_wait_ack(pmac_stream_t *rec) +{ + int timeout = 50000; + while ((in_le32(&rec->dma->status) & RUN) && timeout-- > 0) + udelay(1); +} + +/* + * set the format and rate to the chip. + * call the lowlevel function if defined (e.g. for AWACS). + */ +static void snd_pmac_pcm_set_format(pmac_t *chip) +{ + /* set up frequency and format */ + out_le32(&chip->awacs->control, chip->control_mask | (chip->rate_index << 8)); + out_le32(&chip->awacs->byteswap, chip->format == SNDRV_PCM_FORMAT_S16_LE ? 1 : 0); + if (chip->set_format) + chip->set_format(chip); +} + +/* + * stop the DMA transfer + */ +inline static void snd_pmac_dma_stop(pmac_stream_t *rec) +{ + out_le32(&rec->dma->control, (RUN|WAKE|FLUSH|PAUSE) << 16); + snd_pmac_wait_ack(rec); +} + +/* + * set the command pointer address + */ +inline static void snd_pmac_dma_set_command(pmac_stream_t *rec, pmac_dbdma_t *cmd) +{ + out_le32(&rec->dma->cmdptr, cmd->addr); +} + +/* + * start the DMA + */ +inline static void snd_pmac_dma_run(pmac_stream_t *rec, int status) +{ + out_le32(&rec->dma->control, status | (status << 16)); +} + + +/* + * prepare playback/capture stream + */ +static int snd_pmac_pcm_prepare(pmac_t *chip, pmac_stream_t *rec, snd_pcm_substream_t *subs) +{ + int i; + volatile struct dbdma_cmd __iomem *cp; + snd_pcm_runtime_t *runtime = subs->runtime; + int rate_index; + long offset; + pmac_stream_t *astr; + + rec->dma_size = snd_pcm_lib_buffer_bytes(subs); + rec->period_size = snd_pcm_lib_period_bytes(subs); + rec->nperiods = rec->dma_size / rec->period_size; + rec->cur_period = 0; + rate_index = snd_pmac_rate_index(chip, rec, runtime->rate); + + /* set up constraints */ + astr = snd_pmac_get_stream(chip, another_stream(rec->stream)); + snd_runtime_check(astr, return -EINVAL); + astr->cur_freqs = 1 << rate_index; + astr->cur_formats = 1 << runtime->format; + chip->rate_index = rate_index; + chip->format = runtime->format; + + /* We really want to execute a DMA stop command, after the AWACS + * is initialized. + * For reasons I don't understand, it stops the hissing noise + * common to many PowerBook G3 systems and random noise otherwise + * captured on iBook2's about every third time. -ReneR + */ + spin_lock_irq(&chip->reg_lock); + snd_pmac_dma_stop(rec); + st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP); + snd_pmac_dma_set_command(rec, &chip->extra_dma); + snd_pmac_dma_run(rec, RUN); + spin_unlock_irq(&chip->reg_lock); + mdelay(5); + spin_lock_irq(&chip->reg_lock); + /* continuous DMA memory type doesn't provide the physical address, + * so we need to resolve the address here... + */ + offset = virt_to_bus(runtime->dma_area); + for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) { + st_le32(&cp->phy_addr, offset); + st_le16(&cp->req_count, rec->period_size); + /*st_le16(&cp->res_count, 0);*/ + st_le16(&cp->xfer_status, 0); + offset += rec->period_size; + } + /* make loop */ + st_le16(&cp->command, DBDMA_NOP + BR_ALWAYS); + st_le32(&cp->cmd_dep, rec->cmd.addr); + + snd_pmac_dma_stop(rec); + snd_pmac_dma_set_command(rec, &rec->cmd); + spin_unlock_irq(&chip->reg_lock); + + return 0; +} + + +/* + * PCM trigger/stop + */ +static int snd_pmac_pcm_trigger(pmac_t *chip, pmac_stream_t *rec, + snd_pcm_substream_t *subs, int cmd) +{ + volatile struct dbdma_cmd __iomem *cp; + int i, command; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + if (rec->running) + return -EBUSY; + command = (subs->stream == SNDRV_PCM_STREAM_PLAYBACK ? + OUTPUT_MORE : INPUT_MORE) + INTR_ALWAYS; + spin_lock(&chip->reg_lock); + snd_pmac_beep_stop(chip); + snd_pmac_pcm_set_format(chip); + for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) + out_le16(&cp->command, command); + snd_pmac_dma_set_command(rec, &rec->cmd); + (void)in_le32(&rec->dma->status); + snd_pmac_dma_run(rec, RUN|WAKE); + rec->running = 1; + spin_unlock(&chip->reg_lock); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + spin_lock(&chip->reg_lock); + rec->running = 0; + /*printk("stopped!!\n");*/ + snd_pmac_dma_stop(rec); + for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) + out_le16(&cp->command, DBDMA_STOP); + spin_unlock(&chip->reg_lock); + break; + + default: + return -EINVAL; + } + + return 0; +} + +/* + * return the current pointer + */ +inline +static snd_pcm_uframes_t snd_pmac_pcm_pointer(pmac_t *chip, pmac_stream_t *rec, + snd_pcm_substream_t *subs) +{ + int count = 0; + +#if 1 /* hmm.. how can we get the current dma pointer?? */ + int stat; + volatile struct dbdma_cmd __iomem *cp = &rec->cmd.cmds[rec->cur_period]; + stat = ld_le16(&cp->xfer_status); + if (stat & (ACTIVE|DEAD)) { + count = in_le16(&cp->res_count); + if (count) + count = rec->period_size - count; + } +#endif + count += rec->cur_period * rec->period_size; + /*printk("pointer=%d\n", count);*/ + return bytes_to_frames(subs->runtime, count); +} + +/* + * playback + */ + +static int snd_pmac_playback_prepare(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + return snd_pmac_pcm_prepare(chip, &chip->playback, subs); +} + +static int snd_pmac_playback_trigger(snd_pcm_substream_t *subs, + int cmd) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + return snd_pmac_pcm_trigger(chip, &chip->playback, subs, cmd); +} + +static snd_pcm_uframes_t snd_pmac_playback_pointer(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + return snd_pmac_pcm_pointer(chip, &chip->playback, subs); +} + + +/* + * capture + */ + +static int snd_pmac_capture_prepare(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + return snd_pmac_pcm_prepare(chip, &chip->capture, subs); +} + +static int snd_pmac_capture_trigger(snd_pcm_substream_t *subs, + int cmd) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + return snd_pmac_pcm_trigger(chip, &chip->capture, subs, cmd); +} + +static snd_pcm_uframes_t snd_pmac_capture_pointer(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + return snd_pmac_pcm_pointer(chip, &chip->capture, subs); +} + + +/* + * update playback/capture pointer from interrupts + */ +static void snd_pmac_pcm_update(pmac_t *chip, pmac_stream_t *rec) +{ + volatile struct dbdma_cmd __iomem *cp; + int c; + int stat; + + spin_lock(&chip->reg_lock); + if (rec->running) { + cp = &rec->cmd.cmds[rec->cur_period]; + for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */ + stat = ld_le16(&cp->xfer_status); + if (! (stat & ACTIVE)) + break; + /*printk("update frag %d\n", rec->cur_period);*/ + st_le16(&cp->xfer_status, 0); + st_le16(&cp->req_count, rec->period_size); + /*st_le16(&cp->res_count, 0);*/ + rec->cur_period++; + if (rec->cur_period >= rec->nperiods) { + rec->cur_period = 0; + cp = rec->cmd.cmds; + } else + cp++; + spin_unlock(&chip->reg_lock); + snd_pcm_period_elapsed(rec->substream); + spin_lock(&chip->reg_lock); + } + } + spin_unlock(&chip->reg_lock); +} + + +/* + * hw info + */ + +static snd_pcm_hardware_t snd_pmac_playback = +{ + .info = (SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_RESUME), + .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_8000_44100, + .rate_min = 7350, + .rate_max = 44100, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = 131072, + .period_bytes_min = 256, + .period_bytes_max = 16384, + .periods_min = 3, + .periods_max = PMAC_MAX_FRAGS, +}; + +static snd_pcm_hardware_t snd_pmac_capture = +{ + .info = (SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_RESUME), + .formats = SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_8000_44100, + .rate_min = 7350, + .rate_max = 44100, + .channels_min = 2, + .channels_max = 2, + .buffer_bytes_max = 131072, + .period_bytes_min = 256, + .period_bytes_max = 16384, + .periods_min = 3, + .periods_max = PMAC_MAX_FRAGS, +}; + + +#if 0 // NYI +static int snd_pmac_hw_rule_rate(snd_pcm_hw_params_t *params, + snd_pcm_hw_rule_t *rule) +{ + pmac_t *chip = rule->private; + pmac_stream_t *rec = snd_pmac_get_stream(chip, rule->deps[0]); + int i, freq_table[8], num_freqs; + + snd_runtime_check(rec, return -EINVAL); + num_freqs = 0; + for (i = chip->num_freqs - 1; i >= 0; i--) { + if (rec->cur_freqs & (1 << i)) + freq_table[num_freqs++] = chip->freq_table[i]; + } + + return snd_interval_list(hw_param_interval(params, rule->var), + num_freqs, freq_table, 0); +} + +static int snd_pmac_hw_rule_format(snd_pcm_hw_params_t *params, + snd_pcm_hw_rule_t *rule) +{ + pmac_t *chip = rule->private; + pmac_stream_t *rec = snd_pmac_get_stream(chip, rule->deps[0]); + + snd_runtime_check(rec, return -EINVAL); + return snd_mask_refine_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), + rec->cur_formats); +} +#endif // NYI + +static int snd_pmac_pcm_open(pmac_t *chip, pmac_stream_t *rec, snd_pcm_substream_t *subs) +{ + snd_pcm_runtime_t *runtime = subs->runtime; + int i, j, fflags; + static int typical_freqs[] = { + 44100, + 22050, + 11025, + 0, + }; + static int typical_freq_flags[] = { + SNDRV_PCM_RATE_44100, + SNDRV_PCM_RATE_22050, + SNDRV_PCM_RATE_11025, + 0, + }; + + /* look up frequency table and fill bit mask */ + runtime->hw.rates = 0; + fflags = chip->freqs_ok; + for (i = 0; typical_freqs[i]; i++) { + for (j = 0; j < chip->num_freqs; j++) { + if ((chip->freqs_ok & (1 << j)) && + chip->freq_table[j] == typical_freqs[i]) { + runtime->hw.rates |= typical_freq_flags[i]; + fflags &= ~(1 << j); + break; + } + } + } + if (fflags) /* rest */ + runtime->hw.rates |= SNDRV_PCM_RATE_KNOT; + + /* check for minimum and maximum rates */ + for (i = 0; i < chip->num_freqs; i++) { + if (chip->freqs_ok & (1 << i)) { + runtime->hw.rate_max = chip->freq_table[i]; + break; + } + } + for (i = chip->num_freqs - 1; i >= 0; i--) { + if (chip->freqs_ok & (1 << i)) { + runtime->hw.rate_min = chip->freq_table[i]; + break; + } + } + runtime->hw.formats = chip->formats_ok; + if (chip->can_capture) { + if (! chip->can_duplex) + runtime->hw.info |= SNDRV_PCM_INFO_HALF_DUPLEX; + runtime->hw.info |= SNDRV_PCM_INFO_JOINT_DUPLEX; + } + runtime->private_data = rec; + rec->substream = subs; + +#if 0 /* FIXME: still under development.. */ + snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, + snd_pmac_hw_rule_rate, chip, rec->stream, -1); + snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_FORMAT, + snd_pmac_hw_rule_format, chip, rec->stream, -1); +#endif + + runtime->hw.periods_max = rec->cmd.size - 1; + + if (chip->can_duplex) + snd_pcm_set_sync(subs); + + /* constraints to fix choppy sound */ + snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + return 0; +} + +static int snd_pmac_pcm_close(pmac_t *chip, pmac_stream_t *rec, snd_pcm_substream_t *subs) +{ + pmac_stream_t *astr; + + snd_pmac_dma_stop(rec); + + astr = snd_pmac_get_stream(chip, another_stream(rec->stream)); + snd_runtime_check(astr, return -EINVAL); + + /* reset constraints */ + astr->cur_freqs = chip->freqs_ok; + astr->cur_formats = chip->formats_ok; + + return 0; +} + +static int snd_pmac_playback_open(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + + subs->runtime->hw = snd_pmac_playback; + return snd_pmac_pcm_open(chip, &chip->playback, subs); +} + +static int snd_pmac_capture_open(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + + subs->runtime->hw = snd_pmac_capture; + return snd_pmac_pcm_open(chip, &chip->capture, subs); +} + +static int snd_pmac_playback_close(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + + return snd_pmac_pcm_close(chip, &chip->playback, subs); +} + +static int snd_pmac_capture_close(snd_pcm_substream_t *subs) +{ + pmac_t *chip = snd_pcm_substream_chip(subs); + + return snd_pmac_pcm_close(chip, &chip->capture, subs); +} + +/* + */ + +static snd_pcm_ops_t snd_pmac_playback_ops = { + .open = snd_pmac_playback_open, + .close = snd_pmac_playback_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_pmac_pcm_hw_params, + .hw_free = snd_pmac_pcm_hw_free, + .prepare = snd_pmac_playback_prepare, + .trigger = snd_pmac_playback_trigger, + .pointer = snd_pmac_playback_pointer, +}; + +static snd_pcm_ops_t snd_pmac_capture_ops = { + .open = snd_pmac_capture_open, + .close = snd_pmac_capture_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = snd_pmac_pcm_hw_params, + .hw_free = snd_pmac_pcm_hw_free, + .prepare = snd_pmac_capture_prepare, + .trigger = snd_pmac_capture_trigger, + .pointer = snd_pmac_capture_pointer, +}; + +static void pmac_pcm_free(snd_pcm_t *pcm) +{ + snd_pcm_lib_preallocate_free_for_all(pcm); +} + +int __init snd_pmac_pcm_new(pmac_t *chip) +{ + snd_pcm_t *pcm; + int err; + int num_captures = 1; + + if (! chip->can_capture) + num_captures = 0; + err = snd_pcm_new(chip->card, chip->card->driver, 0, 1, num_captures, &pcm); + if (err < 0) + return err; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_pmac_playback_ops); + if (chip->can_capture) + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_pmac_capture_ops); + + pcm->private_data = chip; + pcm->private_free = pmac_pcm_free; + pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; + strcpy(pcm->name, chip->card->shortname); + chip->pcm = pcm; + + chip->formats_ok = SNDRV_PCM_FMTBIT_S16_BE; + if (chip->can_byte_swap) + chip->formats_ok |= SNDRV_PCM_FMTBIT_S16_LE; + + chip->playback.cur_formats = chip->formats_ok; + chip->capture.cur_formats = chip->formats_ok; + chip->playback.cur_freqs = chip->freqs_ok; + chip->capture.cur_freqs = chip->freqs_ok; + + /* preallocate 64k buffer */ + snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, + snd_dma_continuous_data(GFP_KERNEL), + 64 * 1024, 64 * 1024); + + return 0; +} + + +static void snd_pmac_dbdma_reset(pmac_t *chip) +{ + out_le32(&chip->playback.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); + snd_pmac_wait_ack(&chip->playback); + out_le32(&chip->capture.dma->control, (RUN|PAUSE|FLUSH|WAKE|DEAD) << 16); + snd_pmac_wait_ack(&chip->capture); +} + + +/* + * handling beep + */ +void snd_pmac_beep_dma_start(pmac_t *chip, int bytes, unsigned long addr, int speed) +{ + pmac_stream_t *rec = &chip->playback; + + snd_pmac_dma_stop(rec); + st_le16(&chip->extra_dma.cmds->req_count, bytes); + st_le16(&chip->extra_dma.cmds->xfer_status, 0); + st_le32(&chip->extra_dma.cmds->cmd_dep, chip->extra_dma.addr); + st_le32(&chip->extra_dma.cmds->phy_addr, addr); + st_le16(&chip->extra_dma.cmds->command, OUTPUT_MORE + BR_ALWAYS); + out_le32(&chip->awacs->control, + (in_le32(&chip->awacs->control) & ~0x1f00) + | (speed << 8)); + out_le32(&chip->awacs->byteswap, 0); + snd_pmac_dma_set_command(rec, &chip->extra_dma); + snd_pmac_dma_run(rec, RUN); +} + +void snd_pmac_beep_dma_stop(pmac_t *chip) +{ + snd_pmac_dma_stop(&chip->playback); + st_le16(&chip->extra_dma.cmds->command, DBDMA_STOP); + snd_pmac_pcm_set_format(chip); /* reset format */ +} + + +/* + * interrupt handlers + */ +static irqreturn_t +snd_pmac_tx_intr(int irq, void *devid, struct pt_regs *regs) +{ + pmac_t *chip = devid; + snd_pmac_pcm_update(chip, &chip->playback); + return IRQ_HANDLED; +} + + +static irqreturn_t +snd_pmac_rx_intr(int irq, void *devid, struct pt_regs *regs) +{ + pmac_t *chip = devid; + snd_pmac_pcm_update(chip, &chip->capture); + return IRQ_HANDLED; +} + + +static irqreturn_t +snd_pmac_ctrl_intr(int irq, void *devid, struct pt_regs *regs) +{ + pmac_t *chip = devid; + int ctrl = in_le32(&chip->awacs->control); + + /*printk("pmac: control interrupt.. 0x%x\n", ctrl);*/ + if (ctrl & MASK_PORTCHG) { + /* do something when headphone is plugged/unplugged? */ + if (chip->update_automute) + chip->update_automute(chip, 1); + } + if (ctrl & MASK_CNTLERR) { + int err = (in_le32(&chip->awacs->codec_stat) & MASK_ERRCODE) >> 16; + if (err && chip->model <= PMAC_SCREAMER) + snd_printk(KERN_DEBUG "error %x\n", err); + } + /* Writing 1s to the CNTLERR and PORTCHG bits clears them... */ + out_le32(&chip->awacs->control, ctrl); + return IRQ_HANDLED; +} + + +/* + * a wrapper to feature call for compatibility + */ +#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK) +static void snd_pmac_sound_feature(pmac_t *chip, int enable) +{ +#ifdef CONFIG_PPC_HAS_FEATURE_CALLS + ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable); +#else + if (chip->is_pbook_G3) { + pmu_suspend(); + feature_clear(chip->node, FEATURE_Sound_power); + feature_clear(chip->node, FEATURE_Sound_CLK_enable); + big_mdelay(1000); /* XXX */ + pmu_resume(); + } + if (chip->is_pbook_3400) { + feature_set(chip->node, FEATURE_IOBUS_enable); + udelay(10); + } +#endif +} +#else /* CONFIG_PM && CONFIG_PMAC_PBOOK */ +#define snd_pmac_sound_feature(chip,enable) /**/ +#endif /* CONFIG_PM && CONFIG_PMAC_PBOOK */ + +/* + * release resources + */ + +static int snd_pmac_free(pmac_t *chip) +{ + int i; + + /* stop sounds */ + if (chip->initialized) { + snd_pmac_dbdma_reset(chip); + /* disable interrupts from awacs interface */ + out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff); + } + + snd_pmac_sound_feature(chip, 0); +#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK) + snd_pmac_unregister_sleep_notifier(chip); +#endif + + /* clean up mixer if any */ + if (chip->mixer_free) + chip->mixer_free(chip); + + snd_pmac_detach_beep(chip); + + /* release resources */ + if (chip->irq >= 0) + free_irq(chip->irq, (void*)chip); + if (chip->tx_irq >= 0) + free_irq(chip->tx_irq, (void*)chip); + if (chip->rx_irq >= 0) + free_irq(chip->rx_irq, (void*)chip); + snd_pmac_dbdma_free(&chip->playback.cmd); + snd_pmac_dbdma_free(&chip->capture.cmd); + snd_pmac_dbdma_free(&chip->extra_dma); + if (chip->macio_base) + iounmap(chip->macio_base); + if (chip->latch_base) + iounmap(chip->latch_base); + if (chip->awacs) + iounmap(chip->awacs); + if (chip->playback.dma) + iounmap(chip->playback.dma); + if (chip->capture.dma) + iounmap(chip->capture.dma); + if (chip->node) { + for (i = 0; i < 3; i++) { + if (chip->of_requested & (1 << i)) + release_OF_resource(chip->node, i); + } + } + kfree(chip); + return 0; +} + + +/* + * free the device + */ +static int snd_pmac_dev_free(snd_device_t *device) +{ + pmac_t *chip = device->device_data; + return snd_pmac_free(chip); +} + + +/* + * check the machine support byteswap (little-endian) + */ + +static void __init detect_byte_swap(pmac_t *chip) +{ + struct device_node *mio; + + /* if seems that Keylargo can't byte-swap */ + for (mio = chip->node->parent; mio; mio = mio->parent) { + if (strcmp(mio->name, "mac-io") == 0) { + if (device_is_compatible(mio, "Keylargo")) + chip->can_byte_swap = 0; + break; + } + } + + /* it seems the Pismo & iBook can't byte-swap in hardware. */ + if (machine_is_compatible("PowerBook3,1") || + machine_is_compatible("PowerBook2,1")) + chip->can_byte_swap = 0 ; + + if (machine_is_compatible("PowerBook2,1")) + chip->can_duplex = 0; +} + + +/* + * detect a sound chip + */ +static int __init snd_pmac_detect(pmac_t *chip) +{ + struct device_node *sound; + unsigned int *prop, l; + + if (_machine != _MACH_Pmac) + return -ENODEV; + + chip->subframe = 0; + chip->revision = 0; + chip->freqs_ok = 0xff; /* all ok */ + chip->model = PMAC_AWACS; + chip->can_byte_swap = 1; + chip->can_duplex = 1; + chip->can_capture = 1; + chip->num_freqs = ARRAY_SIZE(awacs_freqs); + chip->freq_table = awacs_freqs; + + chip->control_mask = MASK_IEPC | MASK_IEE | 0x11; /* default */ + + /* check machine type */ + if (machine_is_compatible("AAPL,3400/2400") + || machine_is_compatible("AAPL,3500")) + chip->is_pbook_3400 = 1; + else if (machine_is_compatible("PowerBook1,1") + || machine_is_compatible("AAPL,PowerBook1998")) + chip->is_pbook_G3 = 1; + chip->node = find_devices("awacs"); + if (chip->node) + return 0; /* ok */ + + /* + * powermac G3 models have a node called "davbus" + * with a child called "sound". + */ + chip->node = find_devices("davbus"); + /* + * if we didn't find a davbus device, try 'i2s-a' since + * this seems to be what iBooks have + */ + if (! chip->node) + chip->node = find_devices("i2s-a"); + if (! chip->node) + return -ENODEV; + sound = find_devices("sound"); + while (sound && sound->parent != chip->node) + sound = sound->next; + if (! sound) + return -ENODEV; + prop = (unsigned int *) get_property(sound, "sub-frame", NULL); + if (prop && *prop < 16) + chip->subframe = *prop; + /* This should be verified on older screamers */ + if (device_is_compatible(sound, "screamer")) { + chip->model = PMAC_SCREAMER; + // chip->can_byte_swap = 0; /* FIXME: check this */ + } + if (device_is_compatible(sound, "burgundy")) { + chip->model = PMAC_BURGUNDY; + chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ + } + if (device_is_compatible(sound, "daca")) { + chip->model = PMAC_DACA; + chip->can_capture = 0; /* no capture */ + chip->can_duplex = 0; + // chip->can_byte_swap = 0; /* FIXME: check this */ + chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ + } + if (device_is_compatible(sound, "tumbler")) { + chip->model = PMAC_TUMBLER; + chip->can_capture = 0; /* no capture */ + chip->can_duplex = 0; + // chip->can_byte_swap = 0; /* FIXME: check this */ + chip->num_freqs = ARRAY_SIZE(tumbler_freqs); + chip->freq_table = tumbler_freqs; + chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ + } + if (device_is_compatible(sound, "snapper")) { + chip->model = PMAC_SNAPPER; + // chip->can_byte_swap = 0; /* FIXME: check this */ + chip->num_freqs = ARRAY_SIZE(tumbler_freqs); + chip->freq_table = tumbler_freqs; + chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ + } + if (device_is_compatible(sound, "AOAKeylargo")) { + /* Seems to support the stock AWACS frequencies, but has + a snapper mixer */ + chip->model = PMAC_SNAPPER; + // chip->can_byte_swap = 0; /* FIXME: check this */ + chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */ + } + prop = (unsigned int *)get_property(sound, "device-id", NULL); + if (prop) + chip->device_id = *prop; + chip->has_iic = (find_devices("perch") != NULL); + + detect_byte_swap(chip); + + /* look for a property saying what sample rates + are available */ + prop = (unsigned int *) get_property(sound, "sample-rates", &l); + if (! prop) + prop = (unsigned int *) get_property(sound, "output-frame-rates", &l); + if (prop) { + int i; + chip->freqs_ok = 0; + for (l /= sizeof(int); l > 0; --l) { + unsigned int r = *prop++; + /* Apple 'Fixed' format */ + if (r >= 0x10000) + r >>= 16; + for (i = 0; i < chip->num_freqs; ++i) { + if (r == chip->freq_table[i]) { + chip->freqs_ok |= (1 << i); + break; + } + } + } + } else { + /* assume only 44.1khz */ + chip->freqs_ok = 1; + } + + return 0; +} + +/* + * exported - boolean info callbacks for ease of programming + */ +int snd_pmac_boolean_stereo_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +int snd_pmac_boolean_mono_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 1; + return 0; +} + +#ifdef PMAC_SUPPORT_AUTOMUTE +/* + * auto-mute + */ +static int pmac_auto_mute_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) +{ + pmac_t *chip = snd_kcontrol_chip(kcontrol); + ucontrol->value.integer.value[0] = chip->auto_mute; + return 0; +} + +static int pmac_auto_mute_put(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) +{ + pmac_t *chip = snd_kcontrol_chip(kcontrol); + if (ucontrol->value.integer.value[0] != chip->auto_mute) { + chip->auto_mute = ucontrol->value.integer.value[0]; + if (chip->update_automute) + chip->update_automute(chip, 1); + return 1; + } + return 0; +} + +static int pmac_hp_detect_get(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol) +{ + pmac_t *chip = snd_kcontrol_chip(kcontrol); + if (chip->detect_headphone) + ucontrol->value.integer.value[0] = chip->detect_headphone(chip); + else + ucontrol->value.integer.value[0] = 0; + return 0; +} + +static snd_kcontrol_new_t auto_mute_controls[] __initdata = { + { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Auto Mute Switch", + .info = snd_pmac_boolean_mono_info, + .get = pmac_auto_mute_get, + .put = pmac_auto_mute_put, + }, + { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Headphone Detection", + .access = SNDRV_CTL_ELEM_ACCESS_READ, + .info = snd_pmac_boolean_mono_info, + .get = pmac_hp_detect_get, + }, +}; + +int __init snd_pmac_add_automute(pmac_t *chip) +{ + int err; + chip->auto_mute = 1; + err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip)); + if (err < 0) + return err; + chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip); + return snd_ctl_add(chip->card, chip->hp_detect_ctl); +} +#endif /* PMAC_SUPPORT_AUTOMUTE */ + +/* + * create and detect a pmac chip record + */ +int __init snd_pmac_new(snd_card_t *card, pmac_t **chip_return) +{ + pmac_t *chip; + struct device_node *np; + int i, err; + static snd_device_ops_t ops = { + .dev_free = snd_pmac_dev_free, + }; + + snd_runtime_check(chip_return, return -EINVAL); + *chip_return = NULL; + + chip = kcalloc(1, sizeof(*chip), GFP_KERNEL); + if (chip == NULL) + return -ENOMEM; + chip->card = card; + + spin_lock_init(&chip->reg_lock); + chip->irq = chip->tx_irq = chip->rx_irq = -1; + + chip->playback.stream = SNDRV_PCM_STREAM_PLAYBACK; + chip->capture.stream = SNDRV_PCM_STREAM_CAPTURE; + + if ((err = snd_pmac_detect(chip)) < 0) + goto __error; + + if (snd_pmac_dbdma_alloc(&chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 || + snd_pmac_dbdma_alloc(&chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 || + snd_pmac_dbdma_alloc(&chip->extra_dma, 2) < 0) { + err = -ENOMEM; + goto __error; + } + + np = chip->node; + if (np->n_addrs < 3 || np->n_intrs < 3) { + err = -ENODEV; + goto __error; + } + + for (i = 0; i < 3; i++) { + static char *name[3] = { NULL, "- Tx DMA", "- Rx DMA" }; + if (! request_OF_resource(np, i, name[i])) { + snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i); + err = -ENODEV; + goto __error; + } + chip->of_requested |= (1 << i); + } + + chip->awacs = ioremap(np->addrs[0].address, 0x1000); + chip->playback.dma = ioremap(np->addrs[1].address, 0x100); + chip->capture.dma = ioremap(np->addrs[2].address, 0x100); + if (chip->model <= PMAC_BURGUNDY) { + if (request_irq(np->intrs[0].line, snd_pmac_ctrl_intr, 0, + "PMac", (void*)chip)) { + snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[0].line); + err = -EBUSY; + goto __error; + } + chip->irq = np->intrs[0].line; + } + if (request_irq(np->intrs[1].line, snd_pmac_tx_intr, 0, + "PMac Output", (void*)chip)) { + snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[1].line); + err = -EBUSY; + goto __error; + } + chip->tx_irq = np->intrs[1].line; + if (request_irq(np->intrs[2].line, snd_pmac_rx_intr, 0, + "PMac Input", (void*)chip)) { + snd_printk(KERN_ERR "pmac: unable to grab IRQ %d\n", np->intrs[2].line); + err = -EBUSY; + goto __error; + } + chip->rx_irq = np->intrs[2].line; + + snd_pmac_sound_feature(chip, 1); + + /* reset */ + out_le32(&chip->awacs->control, 0x11); + + /* Powerbooks have odd ways of enabling inputs such as + an expansion-bay CD or sound from an internal modem + or a PC-card modem. */ + if (chip->is_pbook_3400) { + /* Enable CD and PC-card sound inputs. */ + /* This is done by reading from address + * f301a000, + 0x10 to enable the expansion-bay + * CD sound input, + 0x80 to enable the PC-card + * sound input. The 0x100 enables the SCSI bus + * terminator power. + */ + chip->latch_base = ioremap (0xf301a000, 0x1000); + in_8(chip->latch_base + 0x190); + } else if (chip->is_pbook_G3) { + struct device_node* mio; + for (mio = chip->node->parent; mio; mio = mio->parent) { + if (strcmp(mio->name, "mac-io") == 0 + && mio->n_addrs > 0) { + chip->macio_base = ioremap(mio->addrs[0].address, 0x40); + break; + } + } + /* Enable CD sound input. */ + /* The relevant bits for writing to this byte are 0x8f. + * I haven't found out what the 0x80 bit does. + * For the 0xf bits, writing 3 or 7 enables the CD + * input, any other value disables it. Values + * 1, 3, 5, 7 enable the microphone. Values 0, 2, + * 4, 6, 8 - f enable the input from the modem. + */ + if (chip->macio_base) + out_8(chip->macio_base + 0x37, 3); + } + + /* Reset dbdma channels */ + snd_pmac_dbdma_reset(chip); + +#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK) + /* add sleep notifier */ + if (! snd_pmac_register_sleep_notifier(chip)) + snd_card_set_pm_callback(chip->card, snd_pmac_suspend, snd_pmac_resume, chip); +#endif + + if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) + goto __error; + + *chip_return = chip; + return 0; + + __error: + snd_pmac_free(chip); + return err; +} + + +/* + * sleep notify for powerbook + */ + +#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK) + +/* + * Save state when going to sleep, restore it afterwards. + */ + +static int snd_pmac_suspend(snd_card_t *card, pm_message_t state) +{ + pmac_t *chip = card->pm_private_data; + unsigned long flags; + + if (chip->suspend) + chip->suspend(chip); + snd_pcm_suspend_all(chip->pcm); + spin_lock_irqsave(&chip->reg_lock, flags); + snd_pmac_beep_stop(chip); + spin_unlock_irqrestore(&chip->reg_lock, flags); + if (chip->irq >= 0) + disable_irq(chip->irq); + if (chip->tx_irq >= 0) + disable_irq(chip->tx_irq); + if (chip->rx_irq >= 0) + disable_irq(chip->rx_irq); + snd_pmac_sound_feature(chip, 0); + return 0; +} + +static int snd_pmac_resume(snd_card_t *card) +{ + pmac_t *chip = card->pm_private_data; + + snd_pmac_sound_feature(chip, 1); + if (chip->resume) + chip->resume(chip); + /* enable CD sound input */ + if (chip->macio_base && chip->is_pbook_G3) { + out_8(chip->macio_base + 0x37, 3); + } else if (chip->is_pbook_3400) { + in_8(chip->latch_base + 0x190); + } + + snd_pmac_pcm_set_format(chip); + + if (chip->irq >= 0) + enable_irq(chip->irq); + if (chip->tx_irq >= 0) + enable_irq(chip->tx_irq); + if (chip->rx_irq >= 0) + enable_irq(chip->rx_irq); + + return 0; +} + +/* the chip is stored statically by snd_pmac_register_sleep_notifier + * because we can't have any private data for notify callback. + */ +static pmac_t *sleeping_pmac = NULL; + +static int snd_pmac_sleep_notify(struct pmu_sleep_notifier *self, int when) +{ + pmac_t *chip; + + chip = sleeping_pmac; + snd_runtime_check(chip, return 0); + + switch (when) { + case PBOOK_SLEEP_NOW: + snd_pmac_suspend(chip->card, PMSG_SUSPEND); + break; + case PBOOK_WAKE: + snd_pmac_resume(chip->card); + break; + } + return PBOOK_SLEEP_OK; +} + +static struct pmu_sleep_notifier snd_pmac_sleep_notifier = { + snd_pmac_sleep_notify, SLEEP_LEVEL_SOUND, +}; + +static int __init snd_pmac_register_sleep_notifier(pmac_t *chip) +{ + /* should be protected here.. */ + snd_assert(! sleeping_pmac, return -EBUSY); + sleeping_pmac = chip; + pmu_register_sleep_notifier(&snd_pmac_sleep_notifier); + return 0; +} + +static int snd_pmac_unregister_sleep_notifier(pmac_t *chip) +{ + /* should be protected here.. */ + snd_assert(sleeping_pmac == chip, return -ENODEV); + pmu_unregister_sleep_notifier(&snd_pmac_sleep_notifier); + sleeping_pmac = NULL; + return 0; +} + +#endif /* CONFIG_PM && CONFIG_PMAC_PBOOK */ |
